capacity ton per hour wet ball mill

The capacity of a wet ball mill in tons per hour (tph) depends on several factors, including:

1. Mill Dimensions (diameter and length)
2. Operating Conditions (speed, filling ratio, slurry density)
3. Feed & Product Size (fineness of grind)
4. Material Properties (hardness, density, moisture content)
5. Grinding Media (size, type, and loading)

General Estimation for Wet Ball Mill Capacity
– Small-scale lab mills: 0.1–5 tph
– Industrial ball mills: 5–200+ tph

Approximate Capacity Calculation
A simplified formula to estimate capacity is:

\[
\text{Capacity (tph)} = C \times D^{2.5} \times L \times \phi \times J \times \eta
\]

Where:
– \(C\) = Empirical coefficient (~0.1–0.2 for wet grinding)
– \(D\) = Mill diameter (meters)
– \(L\) = Mill length (meters)
– \(\phi\) = Speed (% of critical speed, typically 65–75%)
– \(J\) = Ball filling ratio (~30–45%
– \(\eta\) = Efficiency factor (~0.8–0.9 for wet grinding)

# Example Calculation
For a 2m diameter × 3m long wet ball mill operating at 70% critical speed with 35% ball filling:

\[
\text{Capacity} ≈ 0.15 \times 2^{2.5} \times 3 \times 0.7 \times 0.35 \times 0.85 ≈ 15–25 tph
\]

Key Considerations for Higher Capacity
– Increase mill size (\(D^{2.5}\) effect is significant).
– Optimize slurry density (~60–75% solids by weight).
– Use efficient grinding media (ceramic, high-chrome steel).
– Control feed size distribution (<20mm for efficient grinding).

Would you like a more precise calculation based on your specific material and mill parameters?